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Jean-françois Vayssières - One of the best experts on this subject based on the ideXlab platform.
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fruit flies diptera tephritidae on Vegetable Crops in reunion island indian ocean state of knowledge control methods and prospects for management
Fruits, 2010Co-Authors: Philippe Ryckewaert, Jeanphilippe Deguine, Thierry Brevault, Jean-françois VayssièresAbstract:Significance of fruit flies in Vegetable Crops . Vegetable Crops hold a key position in agricultural production in Reunion (Indian Ocean); however, many pests and diseases threaten the profitability of this agricultural sector. Fruit flies (Diptera: Tephritidae) figure among the main pests for solanaceous Crops and cucurbits (cucumber, zucchini, melon, etc.). Losses of as much as 80% of tomato and 100% of cucurbit crop harvests have been frequently observed. Inventory and distribution . Four fruit fly species belonging to the Tephritidae family cause major damage to Vegetable Crops in Reunion: Bactrocera cucurbitae (Coquillet), Dacus ciliatus Loew and D. demmerezi (Bezzi) on Cucurbitaceae, and Neoceratitis cyanescens (Bezzi) on Solanaceae (primarily the tomato). Distribution of each of them is presented. Biology and behavior . A few studies on the biology and behavior of the four fruit flies were conducted in Reunion in the late 1990s. Their main biological characteristics are summarized. Population control methods used in Reunion . Various methods such as chemical control, preventive measures (sanitation), physical control, biotechnical control [colored traps, the Male Annihilation Technique (MAT) and the Bait Application Technique (BAT)], and biological control currently used in Reunion against fruit flies are reported. Other control methods such as Integrated Pest Management and the Sterile Insect Technique are not used in Reunion. Prospects for implementing agro-ecological management of Vegetable fruit flies in Reunion . This part presents research actions implemented in fly bio-ecology, research actions into the genetic structure of populations and design of an agro-ecological management scheme for Vegetable fruit flies. Conclusions . The control methods used independently have not been successful to effectively control tephritid populations. A more integrated approach is required, also taking into account the landscape scale and its mosaic of habitats, especially wild plants, whose role must be considered within a framework of agro-ecological management of these pest populations.
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fruit flies diptera tephritidae on Vegetable Crops in reunion island indian ocean state of knowledge control methods and prospects for management
Fruits, 2010Co-Authors: Philippe Ryckewaert, Jeanphilippe Deguine, Thierry Brevault, Jean-françois VayssièresAbstract:Significance of fruit flies in Vegetable Crops . Vegetable Crops hold a key position in agricultural production in Reunion (Indian Ocean); however, many pests and diseases threaten the profitability of this agricultural sector. Fruit flies (Diptera: Tephritidae) figure among the main pests for solanaceous Crops and cucurbits (cucumber, zucchini, melon, etc.). Losses of as much as 80% of tomato and 100% of cucurbit crop harvests have been frequently observed. Inventory and distribution . Four fruit fly species belonging to the Tephritidae family cause major damage to Vegetable Crops in Reunion: Bactrocera cucurbitae (Coquillet), Dacus ciliatus Loew and D. demmerezi (Bezzi) on Cucurbitaceae, and Neoceratitis cyanescens (Bezzi) on Solanaceae (primarily the tomato). Distribution of each of them is presented. Biology and behavior . A few studies on the biology and behavior of the four fruit flies were conducted in Reunion in the late 1990s. Their main biological characteristics are summarized. Population control methods used in Reunion . Various methods such as chemical control, preventive measures (sanitation), physical control, biotechnical control [colored traps, the Male Annihilation Technique (MAT) and the Bait Application Technique (BAT)], and biological control currently used in Reunion against fruit flies are reported. Other control methods such as Integrated Pest Management and the Sterile Insect Technique are not used in Reunion. Prospects for implementing agro-ecological management of Vegetable fruit flies in Reunion . This part presents research actions implemented in fly bio-ecology, research actions into the genetic structure of populations and design of an agro-ecological management scheme for Vegetable fruit flies. Conclusions . The control methods used independently have not been successful to effectively control tephritid populations. A more integrated approach is required, also taking into account the landscape scale and its mosaic of habitats, especially wild plants, whose role must be considered within a framework of agro-ecological management of these pest populations. (Resume d'auteur)
M K Hausbeck - One of the best experts on this subject based on the ideXlab platform.
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advances in research on phytophthora capsici on Vegetable Crops in the united states
Plant Disease, 2012Co-Authors: L L Granke, Lina M Quesadaocampo, Kurt Lamour, M K HausbeckAbstract:Abstract Since L. H. Leonian's first description of Phytophthora capsici as a pathogen of chile pepper in 1922, we have made many advances in our understanding of this pathogen's biology, host range, dissemination, and management. P. capsici causes foliar blighting, damping-off, wilting, and root, stem, and fruit rot of susceptible hosts, and economic losses are experienced annually in Vegetable Crops including cucurbits and peppers. Symptoms of P. capsici infection may manifest as stunting, girdling, or cankers for some cultivars or Crops that are less susceptible. P. capsici continues to be a constraint on production, and implementation of an aggressive integrated management scheme can still result in insufficient control when weather is favorable for disease. Management of diseases caused by P. capsici is currently limited by the long-term survival of the pathogen as oospores in the soil, a wide host range, long-distance movement of the pathogen in surface water used for irrigation, the presence of fun...
Philippe Ryckewaert - One of the best experts on this subject based on the ideXlab platform.
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fruit flies diptera tephritidae on Vegetable Crops in reunion island indian ocean state of knowledge control methods and prospects for management
Fruits, 2010Co-Authors: Philippe Ryckewaert, Jeanphilippe Deguine, Thierry Brevault, Jean-françois VayssièresAbstract:Significance of fruit flies in Vegetable Crops . Vegetable Crops hold a key position in agricultural production in Reunion (Indian Ocean); however, many pests and diseases threaten the profitability of this agricultural sector. Fruit flies (Diptera: Tephritidae) figure among the main pests for solanaceous Crops and cucurbits (cucumber, zucchini, melon, etc.). Losses of as much as 80% of tomato and 100% of cucurbit crop harvests have been frequently observed. Inventory and distribution . Four fruit fly species belonging to the Tephritidae family cause major damage to Vegetable Crops in Reunion: Bactrocera cucurbitae (Coquillet), Dacus ciliatus Loew and D. demmerezi (Bezzi) on Cucurbitaceae, and Neoceratitis cyanescens (Bezzi) on Solanaceae (primarily the tomato). Distribution of each of them is presented. Biology and behavior . A few studies on the biology and behavior of the four fruit flies were conducted in Reunion in the late 1990s. Their main biological characteristics are summarized. Population control methods used in Reunion . Various methods such as chemical control, preventive measures (sanitation), physical control, biotechnical control [colored traps, the Male Annihilation Technique (MAT) and the Bait Application Technique (BAT)], and biological control currently used in Reunion against fruit flies are reported. Other control methods such as Integrated Pest Management and the Sterile Insect Technique are not used in Reunion. Prospects for implementing agro-ecological management of Vegetable fruit flies in Reunion . This part presents research actions implemented in fly bio-ecology, research actions into the genetic structure of populations and design of an agro-ecological management scheme for Vegetable fruit flies. Conclusions . The control methods used independently have not been successful to effectively control tephritid populations. A more integrated approach is required, also taking into account the landscape scale and its mosaic of habitats, especially wild plants, whose role must be considered within a framework of agro-ecological management of these pest populations.
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fruit flies diptera tephritidae on Vegetable Crops in reunion island indian ocean state of knowledge control methods and prospects for management
Fruits, 2010Co-Authors: Philippe Ryckewaert, Jeanphilippe Deguine, Thierry Brevault, Jean-françois VayssièresAbstract:Significance of fruit flies in Vegetable Crops . Vegetable Crops hold a key position in agricultural production in Reunion (Indian Ocean); however, many pests and diseases threaten the profitability of this agricultural sector. Fruit flies (Diptera: Tephritidae) figure among the main pests for solanaceous Crops and cucurbits (cucumber, zucchini, melon, etc.). Losses of as much as 80% of tomato and 100% of cucurbit crop harvests have been frequently observed. Inventory and distribution . Four fruit fly species belonging to the Tephritidae family cause major damage to Vegetable Crops in Reunion: Bactrocera cucurbitae (Coquillet), Dacus ciliatus Loew and D. demmerezi (Bezzi) on Cucurbitaceae, and Neoceratitis cyanescens (Bezzi) on Solanaceae (primarily the tomato). Distribution of each of them is presented. Biology and behavior . A few studies on the biology and behavior of the four fruit flies were conducted in Reunion in the late 1990s. Their main biological characteristics are summarized. Population control methods used in Reunion . Various methods such as chemical control, preventive measures (sanitation), physical control, biotechnical control [colored traps, the Male Annihilation Technique (MAT) and the Bait Application Technique (BAT)], and biological control currently used in Reunion against fruit flies are reported. Other control methods such as Integrated Pest Management and the Sterile Insect Technique are not used in Reunion. Prospects for implementing agro-ecological management of Vegetable fruit flies in Reunion . This part presents research actions implemented in fly bio-ecology, research actions into the genetic structure of populations and design of an agro-ecological management scheme for Vegetable fruit flies. Conclusions . The control methods used independently have not been successful to effectively control tephritid populations. A more integrated approach is required, also taking into account the landscape scale and its mosaic of habitats, especially wild plants, whose role must be considered within a framework of agro-ecological management of these pest populations. (Resume d'auteur)
David B Langston - One of the best experts on this subject based on the ideXlab platform.
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aggressiveness and diversity of phytophthora capsici on Vegetable Crops in georgia
Annals of Applied Biology, 2012Co-Authors: J Yin, K L Jackson, B L Candole, A S Csinos, David B LangstonAbstract:Phytophthora blight induced by Phytophthora capsici causes significant yield loss in a number of Vegetable Crops. It is imperative to understand the diversity and aggressiveness of the pathogen to design more efficient disease management programs. A collection of P. capsici strains isolated from different Vegetable Crops in Georgia, USA, were characterised in this study. Of the 49 isolates tested, 24 were A1 and 25 were A2 mating type, respectively, with both mating types found in the same fields. Variability of the isolates was assessed in terms of their aggressiveness on six pepper genotypes. The isolates differed in their aggressiveness on different pepper cultivars with 10 pathotypes identified. No correlation between aggressiveness of the isolates and their host origin or geographical location of isolation was observed. Randomly amplified polymorphic DNA (RAPD) analysis was used to evaluate genetic variability among P. capsici populations. RAPD analysis using 15 random primers resulted in 133 reproducible bands and cluster analysis separated the isolates into 5 groups. Analysis of molecular variance showed that there was moderate genetic differentiation associated with host origin and geographical location of the isolates. No correlation was found between RAPD groups and pathotypes or mating types. These results indicate that P. capsici populations infecting Vegetable Crops in Georgia were genetically diverse, which should be taken into account in developing resistant cultivars or other disease management programmes.
L L Granke - One of the best experts on this subject based on the ideXlab platform.
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advances in research on phytophthora capsici on Vegetable Crops in the united states
Plant Disease, 2012Co-Authors: L L Granke, Lina M Quesadaocampo, Kurt Lamour, M K HausbeckAbstract:Abstract Since L. H. Leonian's first description of Phytophthora capsici as a pathogen of chile pepper in 1922, we have made many advances in our understanding of this pathogen's biology, host range, dissemination, and management. P. capsici causes foliar blighting, damping-off, wilting, and root, stem, and fruit rot of susceptible hosts, and economic losses are experienced annually in Vegetable Crops including cucurbits and peppers. Symptoms of P. capsici infection may manifest as stunting, girdling, or cankers for some cultivars or Crops that are less susceptible. P. capsici continues to be a constraint on production, and implementation of an aggressive integrated management scheme can still result in insufficient control when weather is favorable for disease. Management of diseases caused by P. capsici is currently limited by the long-term survival of the pathogen as oospores in the soil, a wide host range, long-distance movement of the pathogen in surface water used for irrigation, the presence of fun...
